Extracted from Citizen official website:
https://citizen.jp/news/2010/20100514.htmlIn the future, considering that the environment is more important, we also consider the mechanical watches to be environmentally friendly and developed the mechanical movement "Cal.0910" for the first time in about 30 years. "The Citizen" automatic performs all the processes from parts production to assembly consistently in-house, and it is a model that has demonstrated its capabilities as a manufacturer that can only be realized by a long-established watch manufacturer.
The beard mainspring (*2), which is the core of the full-scale mechanical movement "Cal.0910", requires high accuracy, so there are only a few manufacturers in the world that can be manufactured in-house. Our company has a record of producing about 100 million mechanical movements, and we have been developing photovoltaic power generation eco-drives and eco-drive radio timepieces in parallel with mechanical timepiece manufacturing. The culmination of these achievements and technologies is the cornerstone of the birth of the new movement.
Main features
Cal.0910
Mechanical watches with outstanding technological capabilities
• Because the balance spring, which is the core of the mechanical movement, requires high precision, there are only a few watch makers in the world that can be produced in-house. Cal.0910 uses a hairspring that was developed in-house.
• The movement has a spin-mesh pattern, and its decoration can be seen through the see-through back.
The CITIZEN logo on the rotor (rotary weight) uses electroforming technology (*3). A three-dimensional effect is created and a design with a strong presence is produced.
• Cases and bands are finished by skilled craftsmen. Especially for the case, we use a lot of Zaratu polishing, which requires a high level of polishing technique, and combine it with hairline processing to achieve a deep shine.
• The dial design emphasizes visibility and is designed to match the cut on the index by slightly bending the tip of the minute hand. The indexes have been cut on multiple sides, so that they are not only beautifully illuminated by the light, but also easy to read the time.
• The movement and the case are assembled by an elite craftsman called “The Citizen Meister”.
Timeless universal style
The standard model dial is available in two colors: chic and vibrant black and calm white. It is a color that is easy to match with any style. The case is treated with Duratect (*4) to prevent scratches, so you can use it in everyday life without hesitation.
10 year warranty
We will provide free repairs for natural failures that occur within 10 years of purchase. In addition, we will carry out a free inspection twice in the 10 years (2nd year and 8th year).
Item Number CTY57-1271
CTY57-1272
Suggested retail price (tax included) ¥ 294,000
Case material stainless
Band material stainless
Dial color white black
Glass Dual spherical sapphire glass (non-reflective coating on both sides)
Time accuracy:
Average daily difference -5 to +10 seconds
Duration About 42 hours (maximum winding)
Main functions Automatic winding + Manual winding / Date early correction device
Frequency 28,800 times/hour
Case size Diameter 37mm / Thickness 11.3mm (design value)
waterproof 10 ATM water resistant
